Abstract: Two paper webs saturated with an A-phase phenolic resins and dried to a B-phase are conveyed through separate low melting point metal alloy baths, one web after being corrugated, to convert the resin to a fully cured C-phase, whereafter the webs are joined to form a waterproof single face corrugated web.

Abstract: Two paper webs, saturated with a B-phase phenolic resin and dried, are conveyed through separate low melting point metal alloy baths, one web after being corrugated, to convert the resin to a fully cured phase, whereafter the webs are joined to form a structurally rigid waterproof single face corrugated web.

Abstract: Two paper webs saturated with an A-phase phenolic resins and dried to a B-phase are conveyed through separate low melting point metal alloy baths, one web after being corrugated, to convert the resin to a fully cured C-phase, whereafter the webs are joined to form a waterproof single face corrugated web.

Abstract: Building wall panels having lightweight hollow core interiors include embodiments suitable for interior and exterior walls, for industrial, commercial or residential buildings, and for multi-story structures. Various methods for making these wall panels are disclosed, including the formation of cast gypsum firewall layers.

Abstract: Two paperboard webs saturated with a B-phase phenolic resin are fed through separate low melting point metal alloy baths, one web after being corrugated, to convert the resin to A-phase, whereafter the webs are joined to form a waterproof single face corrugated web.

Abstract: A continuous, fully automated and highly productive system for the production of open core elements utilizes a fluting method and related apparatus effective for providing large pitch flutes for the input webs used in forming the core elements. A wide variety of core elements can be produced for uses ranging from large light weight building panels to small light weight packing elements.

Abstract: Building wall panels having lightweight hollow core interiors include embodiments suitable for interior and exterior walls, for industrial, commercial or residential buildings, and for multi-story structures. Various methods for making these wall panels are disclosed, including the formation of cast gypsum firewall layers.

Abstract: A stress-optimized structural support which may be utilized as a beam or assembled with similar supports to form a building floor or roof panel or a bridge deck utilizes an open core element, made preferably of suitably treated fluted paper, upper and lower thin skin sheets, preferably steel skins, and a layer of concrete poured over the top skin. Modules comprising the hollow core element and the upper and lower skin sheets are fabricated to lengths required for building floor, roof or bridge spans and, when joined by welding or otherwise joining the upper and lower skin sheets of adjacent elements along their full lengths, provide a floor or roof deck structure of a large span with horizontal stresses distributed omnidirectionally. A post-stressing tensile system redistributes and reduces the load on the roof deck by about one-half.

Abstract: A composite structural support which may be utilized as a beam or assembled with similar supports to form a building floor or a bridge deck utilizes an open core element, made preferably of suitably treated fluted paper, upper and lower thin steel skins, and a layer of concrete poured over the top skin. Modules comprising the hollow core element and the upper and lower steel skins are fabricated to lengths required for building floor and bridge spans and, when joined by welding the upper and lower skins of adjacent elements along their full lengths, provide a floor or deck structure of a large span. The open core paper elements may be alternately fabricated from single face corrugated webs or open face double wall webs that are slit to form narrow equal width strips stacked and glued face-to-face.

Abstract: Building wall panels having lightweight hollow core interiors include embodiments suitable for interior and exterior walls, for industrial, commercial or residential buildings, and for multi-story structures. Various methods for making these wall panels are disclosed, including the formation of cast gypsum firewall layers.

Abstract: Building wall panels having lightweight hollow core interiors include embodiments suitable for interior and exterior walls, for industrial, commercial or residential buildings, and for multi-story structures. Various methods for making these wall panels are disclosed, including the formation of cast gypsum firewall layers.

Abstract: A continuous, fully automated and highly productive system for the production of open core elements utilizes various formations of fluted input webs which are cut into strips, glued, cross-transferred, and serially upended for placement against preceding strips to build up an open core element. The open core elements are useful in the manufacture of structural members such as doors, floor panels and all panels.

Abstract: A continuous, fully automated and highly productive system for the production of open core elements utilizes a fluting method and related apparatus effective for providing large pitch flutes for the input webs used in forming the core elements. A wide variety of core elements can be produced for uses ranging from large light weight building panels to small light weight packing elements.

Abstract: A composite structural support which may be utilized as a beam or assembled with similar supports to form a building floor or a bridge deck utilizes an open core element, made preferably of suitably treated fluted paper, upper and lower thin steel skins, and a layer of concrete poured over the top skin.

Abstract: A continuous, fully automated and highly productive system for the production of open core elements utilizes various formations of fluted input webs which are cut into strips, glued, cross-transferred, and serially upended for placement against preceding strips to build up an open core element. The open core elements are useful in the manufacture of structural members such as doors, floor panels and to wall panels. Also disclosed is a fluting apparatus effective for providing large pitch flutes for the input webs used in forming the core elements. A glue machine that utilizes a glue roll as the only moving part operates in conjunction with a ganged positive displacement adhesive pump to supply liquid adhesive for application to the flute tips for any of the various glue application stations in the system.

Abstract: A stress-optimized structural support which may be utilized as a beam or assembled with similar supports to form a building floor or roof panel or a bridge deck utilizes an open core element, made preferably of suitably treated fluted paper, upper and lower thin skin sheets, preferably steel skins, and a layer of concrete poured over the top skin. Modules comprising the hollow core element and the upper and lower skin sheets are fabricated to lengths required for building floor, roof or bridge spans and, when joined by welding or otherwise joining the upper and lower skin sheets of adjacent elements along their full lengths, provide a floor or roof deck structure of a large span with horizontal stresses distributed omnidirectionally. A post-stressing tensile system redistributes and reduces the load on the roof deck by about one-half.

Abstract: A self-valving vacuum distribution system for a belt-driven sheet conveyor utilizes the sheets to automatically open vacuum control valves sequentially in a downstream direction as the sheet is carried on the belts. The system also automatically adjusts for varying sheet widths to automatically apply vacuum holding force only to the belt conveyor area covered by the sheet.

Abstract: A system for monitoring and detecting the presence of hazardous material in a water supply system includes monitoring stations distributed throughout the water supply system for detecting the presence of hazardous materials injected downstream of the water treatment source. The system may also include a sampling device for capturing a water sample in response to detection of a hazardous material for more precise analysis.

Abstract: A corrugator single facer of the type utilizing a large diameter bonding roll and a small diameter corrugating roll provides quick roll change capability by mounting three large diameter bonding rolls on a rotatable turret and carrying corresponding small diameter corrugating rolls in a magazine positioned laterally offset from the machine. By driving the corrugating rolls indirectly through the pressure belt arrangement which supports the lower corrugating roll, roll change is significantly simplified.

Abstract: A single facer for corrugated paperboard of the type using a very large diameter fluted bonding roll and a much smaller diameter fluted corrugating roll which engages the bonding roll to provide a corrugating nip. The small diameter corrugating roll is made to be resilient so that it is capable of inward deflection in the vicinity of the corrugating nip in order to cushion impact as the rolls interengage along the corrugating nip. This cushioning deflection absorbs vibrational movement due to chordal action of the interengaging flutes, and thereby reduces noise levels, roll wear and improves the quality and consistency of corrugation.